Energy efficient L2 transmission method using protocol properties for vertical handover in heterogeneous wireless network

This paper proposes an Energy Efficient L2 Transmission Method (EELTM) algorithm of the Mobile Node (MN) for vertical handover in wireless access network. In order to extend battery lifetime at the MN, the proposed scheme exploits one of the traffic properties which is classified into real-time traffic and non-real-time traffic. If the attachment point what MN wants to attach has no available channels for handover, maximum slot time of the contention window is allocated to the MN which is using a non-real-time service instead of executing handover to reduce power consumption consumed by retransmission. To verify our proposed algorithm, we analyze expected power consumption caused by size of contention window according to collision probability.